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63 results for “breeding phenology”
Data from: Wintering areas predict age-related breeding phenology in a migratory passerine bird
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Data from: The environmental predictors of spatiotemporal variation in the breeding phenology of a passerine bird
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Data from: Tracking ice phenology by migratory waterbirds: settling phenology and breeding success of species with divergent population trends
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Data from: Changes in breeding phenology and population size of birds
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Age-related breeding success in little penguins: A result of selection and ontogenetic changes in foraging and phenology
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Data from: Climate and habitat interacts to shape the thermal reaction norms of breeding phenology across lizard populations
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Population structure and dynamics, breeding activity and phenology of the blue-sided treefrog (Agalychnis annae)
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Data from: Bioacoustic monitoring reveals details of tricolored blackbird breeding phenology
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Digital biodiversity datasets reveal breeding phenology and its drivers in a widespread North American mammal
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Brood parasitism, provisioning rates and breeding phenology of male and female magpie hosts
<p class="CuerpoA"><span>Parental care is a costly behaviour that raises the prospects of offspring survival. In species with biparental care these costs are shared by both parents, although there may be a conflict regarding the relative investment of each sex. Avian brood parasites leave all the costs of rearing offspring to their hosts. The magnitude of these costs and their consequences on the relative role of both sexes in parental care and future reproduction remain mostly unknown. Here, we investigate whether provisioning rate of nestlings by magpie hosts (<i>Pica pica</i>) differs between broods parasitized by the great spotted cuckoo (<i>Clamator glandarius</i>) and non-parasitized broods, and whether the relative contribution of each sex to provisioning is affected by parasitism. Furthermore, we explore the effect of parasitism on magpie's future reproduction. We found that provisioning rate was similar in parasitized and non-parasitized broods, and that the relative contribution of males and females was also similar, irrespectively of the parasitism status. However, rearing parasitic offspring seems to have a negative long-term effect on magpie's breeding phenology in the following breeding season. Our results suggest that, although brood parasitism by great spotted cuckoos does not seem to influence the relative contribution of both sexes to parental care, it may entail long-term extra costs in terms of breeding delay for magpies.</span></p>
Data from: Latitudinal variation of arrival and breeding phenology of the pied flycatcher Ficedula hypoleuca using large-scale citizen science data.
<p class="gmail-">Many species have advanced the timing of annual reproductive cycles in response to climatic warming, sometimes leading to asynchrony between trophic levels, with negative population consequences. Long-distance migratory birds, reliant on short seasonal food pulses for breeding, are considered particularly susceptible to such disjunction because late arrival may preclude optimal timing of egg-laying. It is unknown whether the relative timing of arrival and egg-laying is sufficiently plastic, in time and space, to enable an adaptive response when arrival times change relative to local food resources. We used citizen science data, describing pied flycatcher <i>Ficedula hypoleuca</i> arrival and egg-laying dates, to explore temporal (2013-2016) and spatial (across Great Britain) variation in the phenology of arrival, laying and their difference. To assess the long-term trend in arrival and laying at a single location, we used data from a long-term field study. The arrival-laying interval was consistently shorter in the north, driven by the contrast between spatial variation in arrival date and spatial invariance in laying date. To understand whether a short arrival-laying interval may have consequences for productivity, we assessed the association between this interval and clutch size. We found no statistically significant correlation between these two variables. To examine long-term changes in arrival and laying dates, we focussed on a single location in southwestern England. Both dates of first male arrival and first egg laid in a season advanced since 1986, with no evidence of interval shortening. Together, our results demonstrate spatial and annual variation in the arrival-laying interval, with no detected effect on fecundity. Thus, the interval from arrival to laying is likely dictated by spatially and temporally varying local conditions, suggesting these migrant birds may have the ability to adapt this interval to align with local conditions and mitigate potential mismatch impacts.</p>
Data from: Examining carry‐over effects of winter habitat on breeding phenology and reproductive success in prairie warblers (Setophaga discolor)
Winter habitat quality can influence breeding phenology and reproductive success of migratory birds. Using stable isotope ratios of carbon (δ13C) from bird claws and red blood cells collected in Massachusetts, USA, we assessed if winter habitat occupancy carried over to affect prairie warbler (Setophaga discolor) breeding arrival dates, body condition upon arrival, pairing success, first-egg dates, and reproductive success. In two of three years (in 2011 and 2012, but not in 2013), after-second-year (ASY) males wintering in drier habitat, as indicated by enriched δ13C values, arrived later on the breeding grounds. Based on the North Atlantic Oscillation index, there was likely less rainfall in the Caribbean wintering grounds during the winters of 2011 and 2012 compared to the winter of 2013, suggesting increased winter rainfall in 2013 may have diminished the influence of winter habitat occupancy on arrival date. We did not find any effects of winter habitat on breeding season phenomena for second-year (SY) males or females, but our sample sizes for these age/sex classes were relatively low. Although winter habitat quality influenced arrival dates of ASY males, there was no evidence that it affected reproductive performance, perhaps because of high rates of nest depredation in our system. Our study adds to a growing body of research that shows the influence of carry-over effects can differ among species and within populations, and also can be modulated by other environmental conditions. This information enriches our understanding of the role of carry-over effects in population limitation for migratory birds.
Data from: Spring weather conditions influence breeding phenology and reproductive success in sympatric bat populations.
1. Climate is known to influence breeding phenology and reproductive success in temperate zone bats, but long-term population level studies and interspecific comparisons are rare. 2. Investigating the extent to which intrinsic (i.e. age), and extrinsic (i.e. spring weather conditions), factors influence such key demographic parameters as the proportion of females becoming pregnant, or completing lactation, each breeding season, is vital to understanding of bat population ecology and life-history traits. 3. Using data from twelve breeding seasons (2006 - 2017), encompassing the reproductive histories of 623 Myotis daubentonii and 436 M. nattereri adult females, we compare rates of recruitment to the breeding population, and show that these species differ in their relative sensitivity to environmental conditions and climatic variation, affecting annual reproductive success at the population level. 4. We demonstrate that i) Spring weather conditions influence breeding phenology, with warm, dry and calm conditions leading to earlier parturition dates and advanced juvenile development, whilst cold, wet and windy weather delays birth timing and juvenile growth, ii) Reproductive rates in first-year females are influenced by spring weather conditions in that breeding season and in the preceding breeding season when each cohort was born. Pregnancy and lactation rates were both higher when favourable spring foraging conditions were more prevalent, iii) Reproductive success increases with age in both species, but at different rates, iv) Reproductive rates were consistently higher, and showed less inter-annual variation, in second-year and older M. daubentonii (mean 91.55% ± 0.05 SD) than M. nattereri (mean 72.74% ± 0.15 SD), v) Estimates of reproductive success at the population level were highly correlated with the size of the juvenile cohort recorded each breeding season. 5. Improving understanding of the influence of environmental conditions, especially extreme climatic fluctuations, and the identification of critical periods (i.e. spring for reproductive female bats in temperate zones), which have disproportionate and lasting impacts on breeding phenology and reproductive success at a population level, is critical for improving predictions of the likely impact of climate change on bat populations.
Environmental predictors of breeding phenology differ with elevation in a common mountain bird species
<p>Temperatures in mountain areas are increasing at a higher rate than the Northern Hemisphere land average, but how fauna may respond, in particular in terms of phenology, remains poorly understood. The aim of this study was to assess how elevation could modify the relationships between climate variability (air temperature, snow melt-out date), the timing of plant phenology and egg-laying date of the coal tit (<i>Periparus ater</i>). We collected 9 years (2011-2019) of data on egg-laying date, spring air temperature, snow melt-out date and larch budburst date at two elevations (~1300m and ~1900m asl) on a slope located in the Mont-Blanc Massif in the French Alps. We found that at low elevation, larch budburst date had a direct influence on egg-laying date, while at high altitude snow melt-out date was the limiting factor. At both elevations, air temperature had only an indirect effect on egg-laying date. Our results shed light on proximate drivers of breeding phenology responses to inter-annual climate variability in mountain areas, and suggest that factors influencing species phenology vary at different elevations. Predicting the future responses of species in a climate change context will require testing the transferability of models and accounting for non-stationary relationships between environmental predictors and the timing of phenological events.</p>
Data from: A multi-trait evaluation of patterns and fitness consequences of breeding phenology plasticity with nocturnal warming and food restriction in a lizard
<p><span>Faced with climate warming, ectothermic species shift their breeding phenology, which is in part attributed to an acceleration of gestation or incubation in warmer environments. Thermal acceleration of gestation may have important fitness implications for breeding females and their offspring by impacting maternal homeostasis, embryonic development and hatching date, but these benefits and costs have been poorly documented. In addition, while climate change is characterised by a stronger trend for night-time than for daytime warming and concurrent alterations of food availability, few studies have quantified phenology-trait effects of increasing nocturnal temperatures and decreasing food intake.</span><span><span> Here, we exposed female common lizards (</span><em>Zootoca vivipara</em><span>)</span><span> to contrasted nocturnal temperatures and prey availability during gestation.</span> <span>We investigated multiple traits to quantify the functional impacts of nocturnal warming and food availability on breeding phenology, maternal condition, physiology and behaviour, current reproductive output and both females and offspring life-history traits.</span></span><span><span> Nocturnal warming advanced parturition dates, but food restriction further accelerated gestation and females muscle catabolism under moderate nocturnal warming. Nocturnal warming and food restriction during gestation had negative effects on reproductive output and increased physiological imbalances in breeding females. Hot nocturnal temperatures down-regulated </span>basal corticosterone levels<span> and </span>immunocompetence<span>, while food restriction reduced </span>antioxidant capacity <span>of females.</span></span><span><span> The thermal acceleration of gestation induced by nocturnal warming had positive effects on offspring life history traits related to fitness such as endurance at birth and body growth during the first few months of life.</span></span><span><span> By analysing multiple traits, our study provides an integrated understanding of the intra- and intergenerational effects of nocturnal warming and resource availability during gestation in a viviparous ectotherm. Our results underline the importance of considering nocturnal warming and resource availability as factors causing increased physiological imbalances and negative effects on ectotherm reproduction. They also show the need to consider the benefits and costs of phenological advances for breeding females and their offspring in order to improve our understanding of the consequences of phenological changes in the context of climate change.</span></span></p>
Data from: Latitudinal variation of arrival and breeding phenology of the pied flycatcher Ficedula hypoleuca using large-scale citizen science data.
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Brood parasitism, provisioning rates and breeding phenology of male and female magpie hosts
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Data from: Competitor phenology as a social cue in breeding site selection
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Data from: Breeding timed to maximize reproductive success for a migratory songbird: the importance of phenological asynchrony
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Data from: Spring weather conditions influence breeding phenology and reproductive success in sympatric bat populations.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.